One of the least understood dangers is potassium imbalance, a problem doctors take seriously because it can affect the heart’s electrical system. Potassium is an essential mineral that helps regulate heartbeat, muscle contraction and nerve function. Under normal circumstances, it is obtained from foods such as fruits, vegetables, pulses, dairy products and nuts. When a person stops eating for an extended period, the body initially uses stored glucose for energy. As those reserves are depleted, it begins breaking down fat and eventually muscle tissue. During this process, potassium levels can become unstable.
